> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://docs.pixalate.com/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.pixalate.com/_mcp/server. # Build exclusion and inclusion lists > Step-by-step guide to building and downloading an exclusion (block) list or inclusion (allow) list of apps, CTV apps or domains in Media Ratings Terminal Discovery. Exclusion and inclusion lists control where your ads run. An **exclusion list** names the apps and sites your partners should block, such as properties that aren't brand safe, have high invalid traffic (IVT) or carry other risks. An **inclusion list** names the properties you approve. You build both in Media Ratings Terminal (MRT) [Discovery](/mrt/discovery) and download them as a CSV. *Video (1.5 min): build an exclusion or inclusion list in Discovery and download it.* ## Step 1: Choose the channel, device and region #### Open Discovery Sign in at [ratings.pixalate.com](https://ratings.pixalate.com) and select **Discovery**. #### Choose a channel Select **Connected TV**, **Mobile** or **Domains**. #### Set the top-level options * **Mobile:** choose the app store (Google Play or App Store), the device (All Devices, Smartphone or Tablet) and the region (North America, EMEA, LATAM, APAC or Global). * **Connected TV:** choose the CTV platform and the region. * **Domains:** choose the device (All Devices, Desktop or Mobile), the region, and whether to include subdomains. Choosing **All Devices** and the **Global** region gives the most complete data and one row per property. See [Set device and region](/mrt/discovery#set-device-and-region). ## Step 2: Apply filters Select filters in the panel on the left. The results update as soon as you make a selection; you don't need to apply or save. Commonly used filters: | Filter | Use it to | | ---------------------- | ----------------------------------------------------------------------------------------------------------------------------------------- | | Category | Keep or remove whole categories, such as news, travel or social networking. | | Risk | Filter on Pixalate's overall Low, Medium or High risk rating. | | IVT % | Set an estimated IVT threshold from 0 to 100%. A higher percentage means more invalid traffic. The **High IVT** preset sets this for you. | | Brand safety | Filter on overall brand safety risk, or on one category such as adult, violence, gambling, hate speech, or alcohol or drug content. | | Viewability | Filter apps by viewability risk, or websites by a viewability threshold from 0 to 100%. A lower percentage means fewer viewable ads. | | Ads.txt or app-ads.txt | Keep only properties that publish the file. See [Check ads.txt compliance](/mrt/ads-txt). | | MFA risk | Remove made-for-advertising inventory. See [Find MFA sites and apps in the MRT](/compliance/mfa-in-mrt). | | COPPA | Filter on COPPA violation risk or on child-directed audience. | | Owner domain | Include or exclude every property owned by one business. See [Find properties by owner](/mrt/find-by-owner). | For the full set of filters, see [Filter the results](/mrt/discovery#filter-the-results). **Exclusion or inclusion?** For an exclusion list, filter for the risks you want partners to block: high risk, high IVT %, low viewability. For an inclusion list, filter for the properties you approve: lower risk, lower IVT % and higher viewability. ### Start from a preset The **Presets** at the top of the filter panel build a common exclusion list for you: | List | Includes | | ---------------------------------- | ------------------------------------------------------------------------------------------------------------------------------ | | Adult Content | Apps associated with adult content. | | Violence Content | Apps associated with violent content. | | High IVT | Apps with an estimated IVT rate (GIVT plus SIVT) of 10% to 100%. | | No Privacy Policy | Apps whose developers don't post a privacy policy, so they're at higher risk of misusing the data they collect. | | No Clean Programmatic Ads Detected | Apps where Pixalate hasn't been able to find ad space, so inventory sold as coming from them has a high risk of being invalid. | | Anonymous (WHOIS Info Hidden) | Apps whose developer's domain registration is hidden. | ## Step 3: Download the list Switch to **List** view and select **Download as CSV** at the top of the results. The CSV downloads straight away. (On the results of an [imported list](/mrt/bulk-lookups), you can also choose which columns to include.) Large lists can take a few minutes. If the download takes more than 10 minutes, narrow your filters and try again, or contact [support@pixalate.com](mailto:support@pixalate.com). ## Step 4: Share it with your partners Send the CSV to your DSP or other partners to block or target. If you give partners exclusion or inclusion lists, include a clause in your purchase order that requires them to comply. To block risky apps and domains automatically instead of maintaining your own list, see [Data feeds](/data-feeds/overview). ## Related * [Discovery](/mrt/discovery): filters, device and region settings, and export columns. * [Check many apps or domains at once](/mrt/bulk-lookups): start from your own list instead of the whole index. Questions? Email [support@pixalate.com](mailto:support@pixalate.com).